Concrete wall form



May 9, 1939.

J. ORMSTEAD CONCRETE WALL FORM Filed March 29, 1958 2 Sheets-Sheet l May 9, 1939v J. oRMsTEAD v 2,l57,800

CONCRETE WALL lFORM l Filed March 29, 1958 2 Sheets-Sheet 2 rjw E i j [Ii w UNiT il;

The present invention relates to l CONCRETE WALL FORM Jack Ormstead, Tucson, Ariz.

Application March 29, 1938, Serial No. 198,774

1 Claim.

new and useful improvements in concrete wall forms and has for one of its important objects to provide, in a manner as hereinafter set forth, a

device of this character which is adapted to be raised and reset as the wall rises until the desired height has been reached.

Another very important object of the invention is to provide a form of the character described comprising a novel construction and arrangement of cores whereby the wall, when it has been completed, will be provided with a plurality of air chambers or passages extending from top to bottom thereof.

Other objects of the invention are to provide a concrete wall form of the character set forth which will be comparatively simple in construction, strong, durable, highly eflicient and reliable in use, compact, light in weight and which may be manufactured at low cost.

All of the foregoing and still further objects and advantages of the invention will becomeapparent from a Study of the following speciiication, taken in connection with the accompanying drawings wherein like characters of reference dese ignate corresponding parts throughout the several views, and wherein:

Figure 1 is a top plan View of an embodiment of the invention.

Figure 2 is a view in side elevation, thereof. Figure 3 is a cross sectional View, taken sub stantially on the line 3--3 of Fig. 2.

Figure 4 is a detail View in perspective of one of the cores.

Figure 5 is a perspective View of an end portion of one of the iron side plates.

Figure 6 is an elevational view, looking at one end of the form.

Figure 7 is an elevational view, looking at the other end of the invention.

vertical plane are uprights 3.

Fixed at vertically spaced points on the lower portions of the uprights 3 are longitudinal bars i of angle iron having mounted thereon the opposed side plates 5.

Secured beneath the cross members l is a longitudinal member E of suitable metal.

Suspended beneath the longitudinal member EB is a series of spaced, removable cores 1. This is shown to advantage in Fig. 3 of the drawings.

It will be observed that the cores 'l are tapered to facilitate the removal of said cores from the concrete after it has been poured.

Fixed on the upper end portions of the members 3 on one side of the form are inwardly extending arms 8 of angle iron. Arms 9 are pivotally mounted on the upper end portions of the uprights 3 on the other side of the form for swinging movement in a vertical plane. Links I0 extend between the arms 8 and 9 and are pivotally connected thereto. It will be observed that the links Il! are pivotally connected to the fixed arms B at an intermediate point, said links extending to a point adjacent the outer ends of said arms 8. This is also shown to advantage in Fig. 3 of the drawings.

As best seen in Figs. l and '7 of the drawings, hinges l! are mounted on one end portion of the longitudinal bars il for swinging movement in a horizontal plane. The hinges H carry closure plates l2 which are engageable between the side plates or walls 5 for closing the form at this end. Referring now to Figs. l and 6 of the drawings, it will be seen that hinges i3 are mounted for swinging movement in a horizontal plane on the other end portions of the longitudinal bars 4. Arms l0 are pivotally mounted o-n the free ends of the hinges I3, as at l5. Mounted on the arms l@ are plates l which are formed to close the spaces between the side plates 5 and the adjacent end core l.

It is thought that the manner of using the form will be readily apparent from a consideration of the foregoing, particularly to those skilled in the art to which the device pertains. With the plates 5 in the position shown in full lines in Fig. 3 of the drawings, and with the cores 'l suspended therebetween, the concrete is poured. The form is then opened, as indicated in broken lines in Fig. 3 of the drawings, and then raised and reset for the next pouring operation. 'Ihe wall, when completed, will have therein extending from top to bottom thereof a series of air passages formed by the cores l. Further, the Wall, when completed, will have a substantially finished appearance. It may be well to here state that when the form is opened or closed the uprights 3 swing on the ends of the cross members I. Obviously,the form may be made in various sizes for the construction of walls of diiierent thicknesses. The cores 'l are removable, thus permitting as many of said cores to be used as desired. Nuts H detachably secure the cores 'I beneath the longitudinal member 6. When an end of the wall is to be formed, the closure plates I2 are swung into position for use between the side plates 5 for closing the form at this end. Any suitable means may, if necessary, be provided for securing the closure plates I2 in o-perative position. When not in use, the plates I2 and I6 may be swung outwardly to an out of the way position and, if desired, said plates, together with their supporting hinges, may be removed from the form.

It is believed that the many advantages of a concrete wall form constructed in accordance with the present invention will be readily understood and although a preferred embodiment of the device is as illustrated and described, it is to be understood that changes in the details of construction and in the combination and varrangement of parts may be resorted to which will fall Within the scope of the invention as claimed.

W'hat is claimed is:-

A concrete wall form of the class described comprising a plurality of cross members, a longitudinal bar mounted beneath said cross members at an intermediate point, a plurality of cores removably mounted beneath said longitudinal bar,

a plurality of uprights hingedly mounted, at an 5 intermediate point, on the ends of the cross members, pairs of vertically spaced bars xed on said uprights beneath the cross members, side plates xed on the last named bars, hinges mounted for swinging movement in a horizontal plane on the end portions of the last named bars, plates xed on the hinges at one end of the last named bars and engageable between the side plates for closing this end of the form, arms pivota'lly mounted on the free ends of the hinges on l5 l the other ends of the last named bars, and plates xed on the free ends of said arms and engageable between the side plates and one of the cores.

JACK ORMSTEAD. 

